Contact arm unit for a belt grinding machine



FIG. 1 is a perspective view of an arm of a belt grinding machine showing my new design;

FIG. 2 is a perspective view of the side opposite that shown in FIG. 1;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view taken from the right of FIG. 1;

FIG. 6 is a side elevational view taken from the left of FIG. 1;

FIG. 7 is a front elevational view thereof; and

FIG. 8 is a rear elevational view thereof.

The broken line showing in FIG. 1 of a contact wheel and a pair of guide wheels mounted on the arm are for illustrative purposes only. 

The ornamental design for a contact arm unit for a belt grinding machine, as shown and described. 